A newfound fossil of a jawless fish is the oldest known vertebrate cranium preserved in 3D. The 455 million-year-old find could illuminate how vertebrate heads evolved.

Queensland Museum scientists have described a 400-million-year-old fossil, which is possibly the smallest vertebrate fossil animal known from Queensland—Palaeospondylus australis. Details about ...

A newfound fossil of a jawless fish is the oldest known vertebrate cranium preserved in 3D. The 455 million-year-old find could illuminate how vertebrate heads evolved.

The skull arrangement of E. americanus was unlike anything seen in living vertebrates or in the fish’s extinct relatives, with unfused cartilage sections — some symmetrical, some not — at ...